Albert white



A. WHITE.

(N0 ModeL) VISE.

VEFTQR UNITED STATES PATENT QFFICE.

ALBERT \VI'IITE, OF LOXVELTJ, MASSACHUSETTS.

V l S E.

SPECIFICATION forming part of Letters Patent No. 469,493, dated February23, 1892.

Application filed December 9, 1891. Serial No. 414,476. (No model.)

To (all whom it may concern.-

Be it known that I, ALBERT WHITE, a citizen of the United States,residing at Lowell, in the county of Middlesex and Commonwealth ofMassachusetts, have invented a certain new and useful Improvement inVises, of which the following is a specification.

My invention relates to vises of that classin which a movable jaw may bequickly adjusted by hand toward or from a fixed jaw, according to thethickness of the work to be grasped, and then secured and caused to moveslightly toward said fixed jaw by the turning of a leve In theaccompanying drawings, Figure l is an isometric perspective view of partof a work-bench and a vise embodying my improvements secured thereto;Fig. 2, a vertical longitudinal section of said vise on the line 2 2 inFig. 3; Fig. 3, a plan of said vise, the rear portion of theattaching-plate being broken away to show the longitudinal rib securedto said plate, the cramp-bar, cam, camrod, and springs; Fig. 4, atransverse vertical section on the line 4: 4 in Fig. 3 through theattaohingplate, slide, rib, cam-rod, and springs, showing the cramp-barin front elevation.

Ais the fixed jaw, provided with an attaching-plate at, having holes a,through which screws or bolts a are driven up into the bench B to securesaid fixed jaw to said bench in a well-known manner. The attaching-platea is also provided with grooved flanges or ways a to receive the sideedges of the slide 0 of the jaw C in the usual manner. The general shapeof the slide (see Fig. 4) is that of a trough having in the bottomthereof a slot 0', extending nearly from end to end thereof, for theescape of chips and dust. In the sliding jaw C 1s journaled the cam-rodD, which carries a spiral cam d, rigidly secured thereto, as by beingcast thereon, the rod D being preferably of steel or wrought-iron. Thelever or handle cl may also be cast on the cam-rod or otherwise rigidlysecured thereto in any'wellknown manner. \Vhen the cam cl and lever dare cast on the rod D, it is necessary that the opening 0 in the frontor sliding jaw C should be large enough to allow said cam to be passedthrough said front jaw. The front journal of the cam-rod turns in ajournal-box E, which fills the opening 0 and which is first cast orotherwise formed to have a running fit on said cam-rod and is placed onsaid rod before the handle d and cam cl are cast thereon, saidjournal-box E being provided at its front end with an external annularflange e, which fills a corresponding enlargement c of the front end ofthe opening 0 and prevents said journal-box from being pushed throughsaid opening into the trough or slide 0. The cam-rod near its rear endis reduced or annularly grooved to form the rear journal d which restsin a half-round groove or half j ournal-box c in the vertical rear end 0of the slide, the shoulders or sides (i ch of the groove (Z restingagainst the front and back of the end 0 and preventing any longitudinalmovement of said cam-rod and holding the hub 61 ofthe lever (1 againstthe front end of the journal-box E, and thereby retaining saidjournal-box E in the opening 0 The construction above described isapplicable to many Vises of the class to which the improvement hereindescribed belongs, but which employ other means for gripping the work.

The attaching-plate a is provided with a longitudinal rib F,rigidlysecured thereto parallel with the ways a The slide 0 is providedwith flat bottomed recesses o 0 in which rests the cramp-bar Gaboutflush with the top of said slide. The cramp-bar G is provided with anotch g, in which the cam-rod D turns freely out of contact with saidbar G in all positionsof thelatter, and with another notch g, whichadmits the rib F. The cramp-bar G when not pressed forward by the cam (Zis held against the rear walls 0 c of the recesses c c by one or moresprings, those shown being spiral wire springs H H, arranged in holes 00 formed in the rear ends of brackets e or inward projections cast onthe slide 0, said springs being compressed between the bottoms or closedends of said holes 0 e and the front face of said cramp-bar G. Each sideof the notch g is in two planes, the side farthest from the cam having afront portion 9 and the side nearest the cam having a rear portion 9parallel with the rib F and out of contact therewith when said crampbaris not pressed forward by the cam d to al- 9 g of the sides of saidnotch g are paral-- lel with each other and are forced into contact withthe opposite sides of the rib F when the end of the cramp-bar nearestthe cam d is moved forward, while the other end of said cramp-bar is notadvanced. The cam d is arranged back of the cramp-bar and in contacttherewith; but the cam-surface d or scroll-surface of said cam does notpress against said cramp-bar when the handle or lever is in a certainposition, preferably a vertical position; but when said lever is turneddown to the right in Fig. 1, toward the observer in Fig. 2, or down inFig. 3 said cam-surface d first crowds the adjacent end of the crampbarforward or toward the jaws, the other end of said cramp-bar being heldback by the spring H, which, being farther from the cam, has a greaterleverage on the cramp-bar than the spring H and overcomes the resistanceof the last-named spring until, by the turning of said cramp-bar, thesurfaces 9 g strike the opposite sides of the rib F and prevent thefurther turning or movement of said cramp-bar and cause said cramp-barto grip the rib with such force that the further a turning of said leverand cam causes said cam to move backward, carrying the slide with it andcausing the jaw O to approach the fixed jaw A. A reverse movement of thelever relieves the pressure of the cam upon the crampbar, which ispushed back into the rear ends of the recesses and out of contact withthe rib F, leaving the movable. jaw free to be moved by hand.

The spring H farthest from the cam, if made stout enough, will disengagethe cramp-bar from the rib and return said bar to place; but for greatersecurity I prefer to use a spring at each end of said bar.

i I claim as my invention- 1. The combination of a fixed jaw providedwith 'a longitudinal rib, a sliding jaw, a bar supported on said slidingjaw and having a notch to receive said rib, and a cam also supported onsaid sliding jaw and adapted and arranged to advance one end of said barto cause the sides of said notch to engage said rib, as and for thepurpose specified.

2. The combination of a fixed jaw provided with a longitudinal rib, asliding jaw, a bar supported on said sliding jaw and having a notch toreceive said rib, a cam also supported on said sliding jaw and adaptedand arranged to advance one endof saidbar to cause the sides of saidnotch to engage said rib, and one or more springs to restore said bar toposition when released by said cam, as and for the purpose specified.

3. The combination of a fixed jaw provided with a longitudinal rib, asliding jaw provided with recesses, abar arranged in said recesses andhaving a notch to receive said rib, and a cam journaled on said slidingjaw and adapted to advance one end of said bar to cause the sides ofsaid notch to engage said rib, as and for the purpose specified.

at. The combinationof a fixed jawprovided with a longitudinal rib, asliding jaw provided with recesses, a bar arranged in said recesses andmovable therein and having a notch to receive said rib, a cam journaledon said sliding jaw and adapted to advance one end of said bar to causethe sides of said notch to engage said rib, and one or more springs torestore said bar to position when released by said cam, as and for thepurpose specified.

5. The combination of the sliding jaw having an opening and having aslide, the camrod, a cam secured on said rod, a handleorle ver alsosecured on said rod, and a journalbox loose on said cam-rod and fillingsaid opening and retained therein by said handle and by a shoulder withwhich said cam-rod is provided, which shoulder extends back of saidslide and prevents a forward movement of said cam-rod and handle, as andfor the purpose specified.

In witness whereofI have signed this specification, in the presence oftwo attesting witnesses, this 7th day of December, A. D. 1891.

ALBERT WHITE. Witnesses:

ALBERT M. MOORE, MYRTIE C. BEALS.

